// recur.c -- recursion illustration
#include <stdio.h>
void up_and_down(int);

int main(void)
{
	up_and_down(1);
	return 0;
}

void up_and_down(int n)
{
	printf("Level %d: n location %p\n", n, &n);
	if (n < 4)
		up_and_down(n+1);
	printf("Level %d: n location %p\n", n, &n);
}